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San Diego–Tijuana is an urban agglomeration across the Mexico–United States border. A transborder agglomeration is an urban agglomeration or conurbation that extends into multiple sovereign states and/or dependent territories. It includes city-states that agglomerate with their neighbouring countries.
The Swahili city-states were independent, self-governing urban centres that were located on the Swahili coast of East Africa between the 8th and 16th centuries. These were primarily coastal hubs, including Kilwa, Mombasa and Zanzibar, which prospered due to their advantageous locations along Indian Ocean trade networks, enabling interactions between Africa, the Middle East and Asia.
All African states are members of the African Union. The United States of Africa is a concept of a federation of some or all of the 54 sovereign states and two disputed states on the continent of Africa. The concept takes its origin from Marcus Garvey's 1924 poem "Hail, United States of Africa". [1] [2] [3]
City networks are a geographical concept studying connections between cities by placing the cities as nodes on a network. In modern conceptions of cities, these networks play an important role in understanding the nature of cities. City networks can identify physical connections to other places, such as railways, canals, scheduled flights, or ...
The rise of the Swahili coast city-states can be largely attributed to the region's extensive participation in a trade network that spanned the Indian Ocean. [21] [22] The Indian Ocean's trade network has been likened to that of the Silk Road, with many destinations being linked through trade.
AMEA: Asia, Middle East and Africa; America (AMER): Usage varies; it may refer to just the United States of America, or just North America, or all of North and South America combined, or some other combination. Americas (AMS or AMERS): Usage varies; often refers to all of North and South America combined. AMS: Andorra, Monaco, San Marino [1]
The autonomous areas differ from federal units and independent states in the sense that they, in relation to the majority of other sub-national territories in the same country, enjoy a special status including some legislative powers, within the state (for a detailed list of federated units, see federated state).
These policies had a tremendous impact on the urban form of all cities in South Africa, essentially determining the density and subsequent atmosphere of the cities. [19] In the mid-1970s unplanned informal settlements began appearing outside the "white areas" of cities, further reinforcing and spatializing a racialized power differential. [19]